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<br />'1- or'a <br />.L,O J. t <br /> <br />Article 11(2) of the Criteria for Coordinated Long-Range Operation <br />of Colorado River Reservoirs, promulgated by the Secretary of Interior <br />in June 1970, states that when Lake Powell active storage is less than <br />Lake Mead active storage, then the objective shall be to maintain a <br />minimum release from Lake Powell of S.23 million acre-feet for that <br />year. Lake Powell active storage was less than Lake Mead active storage <br />during the 1978-79 water year, and the flow at Lee Ferry, consisting of <br />Lake Powell releases plus Paria River inflows assumed to average 20,000 <br />acre-feet a year, conformed to the Operating Criteria by slightly exceeding <br />the specified release. <br /> <br />Operating statistics of the <br />presented in Tables 4 through 8. <br />cussions. <br /> <br />river for the water year 1978-79 are <br />These follow with accompanying dis- <br /> <br />Table 4 shows the measured flow at key stations. The first three <br />stations listed in Table 4 represent over 90 percent of the flow into <br />Lake Powell. <br /> <br />TABLE 4 <br /> <br />MEASURED FLOII IN COLORADO RIVER AND <br />TRIBUTARIES FOR WATER YEAR 1978 - 79 <br /> <br />(Thousands of Acre-feet) <br /> <br />Station <br /> <br />Measured Flow <br /> <br />Upper Basin <br /> <br />Green River at Green River, Utah <br />Colorado River near Cisco, Utah <br />San Juan River near Bluff, Utah <br />Colorado River at Lee Ferry <br /> <br />Lower Basin - Colorado River <br /> <br />4,292 <br />6.7M <br />3,072 <br />8.262 <br /> <br />Near Grand Canyon <br />Below Davis Dam <br />Below Parker Dam <br />At Northerly International Boundary <br />above Morelos Dam <br /> <br />9,147 <br />7,760 <br />6,876 <br /> <br />2.510* <br /> <br />* Additional deliveries to Mexico are made at the Southerly <br />International Boundary near San Luis, to the City of Tijuana. <br />and below Morelos Dam through the Well ton-Mohawk Outfall Drain. <br />See Table 7 for data on deliveries to Mexico. <br /> <br />-3- <br />